CVE-2019-9579

Description

An issue was discovered in Illumos in Nexenta NexentaStor 4.0.5 and 5.1.2, and other products. The SMB server allows an attacker to have unintended access, e.g., an attacker with WRITE_XATTR can change permissions. This occurs because of a combination of three factors: ZFS extended attributes are used to implement NT named streams, the SMB protocol requires implementations to have open handle semantics similar to those of NTFS, and the SMB server passes along certain attribute requests to the underlying object (i.e., they are not considered to be requests that pertain to the named stream).

Category

8.1
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.28%
Vendor Advisory illumos.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.illumos.org/issues/10506 patch vendor advisory mitigation
https://www.oracle.com/security-alerts/cpuapr2020.html third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2019-9579?
CVE-2019-9579 has been scored as a high severity vulnerability.
How to fix CVE-2019-9579?
To fix CVE-2019-9579, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-9579 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-9579 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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